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Finding the Fourth Proportional to 618.22, 926.11 and 531.55

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Solution

The fourth proportional to 618.22, 926.11 and 531.55 is: 796.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    618.22 : 926.11 = 531.55 : x
  2. Step 2: Convert to fraction form
    618.22/926.11 = 531.55/x
  3. Step 3: Cross multiply
    618.22x = 926.11 × 531.55
  4. Step 4: Simplify right side
    618.22x = 492,273.77
  5. Step 5: Solve for x
    x = 492,273.77/618.22
  6. Step 6: Final answer
    x = 796.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.